The stabbing pain below the 38th week of pregnancy is considered to be caused by poor blood circulation, especially when the fetus has entered the disc at the late stage of pregnancy, the fetal head will press into the pelvic cavity resulting in poor blood circulation will cause the stabbing pain. The head of the fetus presses on the pubic symphysis resulting in the separation of the pubic symphysis, which can also cause bone pain, the separation of the pubic symphysis is not greater than 10mm, no special treatment is normal physiological performance, until the baby is born can return to normal. Usually try to pay attention not to stand or sit for a long time will aggravate the pain symptoms, try to take a left side rest can promote blood circulation and reduce the pain caused by the pressure on the abdominal aorta due to right-sided uterus.